CN110714791A - Method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering - Google Patents
Method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering Download PDFInfo
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- CN110714791A CN110714791A CN201911034434.2A CN201911034434A CN110714791A CN 110714791 A CN110714791 A CN 110714791A CN 201911034434 A CN201911034434 A CN 201911034434A CN 110714791 A CN110714791 A CN 110714791A
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- shallow
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- underground
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000012943 hotmelt Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000009412 basement excavation Methods 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 239000004746 geotextile Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 4
- 239000004571 lime Substances 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000011378 shotcrete Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering, and relates to the technical field of comprehensive pipe gallery engineering. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering comprises the following specific steps: s1, primary support surface treatment: cutting off the protruding parts such as the reinforcing mesh, leveling the protruding parts by using mortar lime, and spraying concrete to enable the surfaces of the protruding parts to be smooth and round; s2, fixing 400g/m2 geotextile on the primary support by using a hot-melt gasket (liner), and driving a steel nail into the liner by using a nail gun to fix the liner on the primary support. According to the method for the shallow-buried underground excavation two-lining waterproof rapid construction in the comprehensive pipe gallery engineering, a nail cold bonding laying method and a nail-free heat bonding laying method are combined, the construction period is shortened on the premise of reducing the cost in the shallow-buried underground excavation process, the tunnel waterproof engineering is laid more efficiently and rapidly, the working time of constructors is greatly shortened, the working efficiency of shallow-buried underground excavation is improved, and the cost on manpower is saved.
Description
Technical Field
The invention relates to the technical field of comprehensive pipe rack engineering, in particular to a method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe rack engineering.
Background
Along with city utility tunnel's rapid development, the piping lane tunnel is also more and more, and city utility tunnel requires very high to water repellent, does not ooze to accomplish to drip, more does not allow to leak. Because seepage, leaking can cause tunnel lining and the erosion destruction of equipment such as various ventilation, illumination, fire control, the pipeline corrosion such as the pipeline in the piping lane not only can aggravate by ponding in the piping lane, can seriously influence the safe handling of equipment, pipeline, cable in the piping lane moreover.
The traditional shallow-buried and underground-excavated two-lining waterproof construction method generally adopts the following two methods: firstly, the waterproof nail is nailed on the primary protection surface by a steel nail, the nail hole is sealed by a waterproof board adhesive tape, so as to prevent the nail hole from leaking water, and the method is rarely adopted because the process is complicated and the later maintenance is troublesome; and the other is the waterproof coiled material that the waterproof board and the geotextile are glued in a factory, the geotextile is threaded with rope belts, and the distance between the rope belts is 0.8m multiplied by 1.0 m. The waterproof coiled material is firstly punched on the vault and the side wall by using a percussion drill, nailing is carried out in the eye, and the rope belt on the waterproof coiled material is tied on the nail, so that the method has higher cost.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for quickly constructing a shallow-buried and underground-excavated two-lining waterproof structure in a comprehensive pipe gallery engineering, which solves the problem that the traditional shallow-buried and underground-excavated two-lining waterproof structure is difficult to effectively prevent nail hole water leakage on the premise of ensuring the construction cost.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering comprises the following specific steps:
s1, primary support surface treatment: cutting off the protruding parts such as the reinforcing mesh, leveling the protruding parts by using mortar lime, and spraying concrete to enable the surfaces of the protruding parts to be smooth and round;
s2, mixing the mixture with the weight ratio of 400g/m2Fixing the geotextile on the primary support by using a hot-melt gasket (liner), and driving a steel nail into the liner by using a nail gun to fix the steel nail on the primary support;
s3, hot melting the liner by using a manual special welding device, and paving the EVA waterproof board on the hot-melted liner with certain viscosity;
s4, carrying out hot-melt bonding between the EVA waterproof boards by adopting a special welding device, wherein the bonding position is not less than 10cm, and the bonding peel strength is not less than 80% of the matrix tensile strength;
and S5, repeating the steps S1 to S4 until the underground excavation primary support waterproof board is completely paved.
Preferably, in step S1, the amount of unevenness of the concrete should not exceed ± 5cm when the concrete is gunned.
Preferably, in step S2, when the nail gun drives the steel nail into the pad, the steel nail length is not less than 50mm, and 4 points/m on average2。
Preferably, in step S3, the adhesive peel strength between the EVA waterproof sheet and the liner should not be less than the tensile strength of the waterproof sheet.
Preferably, the distance between the circumferential bonding part of the EVA waterproof board and the lining joint seam is not less than 1.0m, the waterproof board is not tightened before the waterproof layer is laid, and the board surface and the sprayed concrete surface are ensured to be close and not to be pulled to crack.
Preferably, in step S2, the hot-melt gasket comprises a hot-melt gasket plastic ring, a metal gasket and a nail penetration hole, wherein the hot-melt gasket plastic ring has a diameter of 60mm and a thickness of 8mm, and the nail penetration hole has a diameter of 4 mm.
(III) advantageous effects
The invention provides a method for shallow-buried and underground-excavated two-lining waterproof rapid construction in a comprehensive pipe gallery project. The method has the following beneficial effects: according to the method for the shallow-buried underground excavation two-lining waterproof rapid construction in the comprehensive pipe gallery engineering, a nail cold bonding laying method and a nail-free heat bonding laying method are combined, the construction period is shortened on the premise of reducing the cost in the shallow-buried underground excavation process, the tunnel waterproof engineering is laid more efficiently and rapidly, the working time of constructors is greatly shortened, the working efficiency of shallow-buried underground excavation is improved, and the cost on manpower is saved.
Drawings
FIG. 1 is a schematic view of the construction of the underground excavation two-lining structure;
FIG. 2 is a schematic view of the construction of the hot melt gasket;
FIG. 3 is a schematic view of a hot melt gasket.
In the figure: 1. supporting a side wall or a top plate for the primary excavation; 2. is geotextile; 3. is a hot melt gasket; 4. is a metal gasket; 5. is a shooting nail; 6. is an EVA waterproof board; 7. 2mm of EVA waterproof board; 8. a second liner structure; 9. primary support; 10. 400g/m2A geotextile buffer layer; 11. hot melting the plastic ring of the gasket; 12. a metal gasket; 13. the nail is driven into the hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering comprises the following specific steps:
s1, primary support surface treatment: cutting off the protruding parts such as the reinforcing mesh, leveling the protruding parts by using mortar lime, and spraying concrete to ensure that the surfaces of the protruding parts are smooth and round, wherein the concave-convex amount of the protruding parts is not more than +/-5 cm when the concrete is sprayed;
s2, mixing the mixture with the weight ratio of 400g/m2The hot-melt gasket (liner) for the geotextile is fixed on the primary support, the hot-melt gasket comprises a hot-melt gasket plastic ring, a metal gasket and a nail-shooting hole, wherein the diameter of the hot-melt gasket plastic ring is 60mm, the thickness of the hot-melt gasket plastic ring is 8mm, the diameter of the nail-shooting hole is 4mm, a nail gun is used for shooting a steel nail into the liner to fix the steel nail into the liner on a primary support, when the nail gun is used for shooting the steel nail into the liner, the length of the steel nail is not less than 50mm, and the average 4 points2；
S3, hot melting the liner by using a manual special welding device, paving and sticking the EVA waterproof board on the hot-melted liner with certain viscosity, wherein the bonding peel strength between the EVA waterproof board and the liner is not less than the tensile strength of the waterproof board;
s4, carrying out hot-melt bonding between the EVA waterproof boards by adopting a special welding device, wherein the bonding position is not less than 10cm, and the bonding peel strength is not less than 80% of the matrix tensile strength;
and S5, repeating the steps S1 to S4 until the comprehensive laying of the underground excavation primary support waterproof board is completed, wherein the distance between the annular bonding part of the EVA waterproof board and the joint seam of the lining is not less than 1.0m, the waterproof board cannot be tightened before the waterproof board is laid, and the board surface and the concrete spraying surface are ensured to be closely attached and not to be pulled to crack.
To sum up, the method for the shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering combines a nail cold bonding laying method and a nail-free heat sealing laying method, reduces the construction period on the premise of reducing the cost in the shallow-buried and underground-excavated process, and lays the tunnel waterproof engineering more efficiently and rapidly, thereby greatly reducing the working time of constructors, improving the working efficiency of shallow-buried and underground-excavated work, and saving the cost on manpower.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a shallow two waterproof quick construction methods of lining of undercut of burying in utility tunnel engineering which characterized in that: the method comprises the following specific steps:
s1, primary support surface treatment: cutting off the protruding parts such as the reinforcing mesh, leveling the protruding parts by using mortar lime, and spraying concrete to enable the surfaces of the protruding parts to be smooth and round;
s2, mixing the mixture with the weight ratio of 400g/m2Fixing the geotextile on the primary support by using a hot-melt gasket (liner), and driving a steel nail into the liner by using a nail gun to fix the steel nail on the primary support;
s3, hot melting the liner by using a manual special welding device, and paving the EVA waterproof board on the hot-melted liner with certain viscosity;
s4, carrying out hot-melt bonding between the EVA waterproof boards by adopting a special welding device, wherein the bonding position is not less than 10cm, and the bonding peel strength is not less than 80% of the matrix tensile strength;
and S5, repeating the steps S1 to S4 until the underground excavation primary support waterproof board is completely paved.
2. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering according to claim 1 is characterized in that: in step S1, the amount of unevenness of the concrete should not exceed ± 5cm when the concrete is to be shotcreted.
3. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering according to claim 1 is characterized in that: in step S2, when the nail gun drives the steel nail into the pad, the steel nail length is not less than 50mm, and 4 points/m on average2。
4. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering according to claim 1 is characterized in that: in step S3, the adhesive peel strength between the EVA waterproof sheet and the liner must not be less than the tensile strength of the waterproof sheet.
5. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering according to claim 1 is characterized in that: the distance between the annular bonding part of the EVA waterproof board and the lining joint seam is not less than 1.0m, the waterproof board is not tightened before the waterproof layer is laid, and the board surface and the sprayed concrete surface are ensured to be closely adhered and not to be pulled to crack.
6. The method for shallow-buried and underground-excavated two-lining waterproof rapid construction in the comprehensive pipe gallery engineering according to claim 1 is characterized in that: in step S2, the hot-melt gasket comprises a hot-melt gasket plastic ring, a metal gasket and a nail-shooting hole, wherein the diameter of the hot-melt gasket plastic ring is 60mm, the thickness of the hot-melt gasket plastic ring is 8mm, and the diameter of the nail-shooting hole is 4 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034434.2A CN110714791A (en) | 2019-10-29 | 2019-10-29 | Method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911034434.2A CN110714791A (en) | 2019-10-29 | 2019-10-29 | Method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering |
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| CN110714791A true CN110714791A (en) | 2020-01-21 |
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| CN201911034434.2A Withdrawn CN110714791A (en) | 2019-10-29 | 2019-10-29 | Method for shallow-buried and underground-excavated two-lining waterproof rapid construction in comprehensive pipe gallery engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828056A (en) * | 2020-07-28 | 2020-10-27 | 中建七局安装工程有限公司 | Shallow-buried underground excavation tunnel waterproof construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003190A (en) * | 2010-10-09 | 2011-04-06 | 卢桂才 | Construction method for pre-laying tunnel waterproof coiled material |
| CN202431281U (en) * | 2011-12-13 | 2012-09-12 | 中铁十八局集团第三工程有限公司 | Waterproof structure outside side wall of subway station main body |
| CN106437726A (en) * | 2016-11-02 | 2017-02-22 | 中铁二十局集团第五工程有限公司 | Ground fracture crushed zone passing construction method for shallow-buried tunnel excavation |
| CN109139062A (en) * | 2018-07-30 | 2019-01-04 | 中铁七局集团西安铁路工程有限公司 | A kind of electromagnetism welding machine laying tunnel water proofing board construction method |
| CN109505609A (en) * | 2018-11-21 | 2019-03-22 | 中交第四公路工程局有限公司 | Shallow buried covered excavation Urban Underground pipe gallery non-stand construction method and pipe gallery |
-
2019
- 2019-10-29 CN CN201911034434.2A patent/CN110714791A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003190A (en) * | 2010-10-09 | 2011-04-06 | 卢桂才 | Construction method for pre-laying tunnel waterproof coiled material |
| CN202431281U (en) * | 2011-12-13 | 2012-09-12 | 中铁十八局集团第三工程有限公司 | Waterproof structure outside side wall of subway station main body |
| CN106437726A (en) * | 2016-11-02 | 2017-02-22 | 中铁二十局集团第五工程有限公司 | Ground fracture crushed zone passing construction method for shallow-buried tunnel excavation |
| CN109139062A (en) * | 2018-07-30 | 2019-01-04 | 中铁七局集团西安铁路工程有限公司 | A kind of electromagnetism welding machine laying tunnel water proofing board construction method |
| CN109505609A (en) * | 2018-11-21 | 2019-03-22 | 中交第四公路工程局有限公司 | Shallow buried covered excavation Urban Underground pipe gallery non-stand construction method and pipe gallery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828056A (en) * | 2020-07-28 | 2020-10-27 | 中建七局安装工程有限公司 | Shallow-buried underground excavation tunnel waterproof construction method |
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Application publication date: 20200121 |
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